src/core/oidentdconfiggenerator.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005-2018 by the Quassel Project                        *
   3  *   devel@quassel-irc.org                                                 *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) version 3.                                           *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  19  ***************************************************************************/
  20
  21 #include <QString>
  22
  23 #include "corenetwork.h"
  24 #include "oidentdconfiggenerator.h"
  25
  26 OidentdConfigGenerator::OidentdConfigGenerator(QObject *parent) :
  27     QObject(parent),
  28     _initialized(false)
  29 {
  30     if (!_initialized)
  31         init();
  32 }
  33
  34
  35 OidentdConfigGenerator::~OidentdConfigGenerator()
  36 {
  37     _quasselConfig.clear();
  38     writeConfig();
  39     _configFile->deleteLater();
  40 }
  41
  42
  43 bool OidentdConfigGenerator::init()
  44 {
  45     _configDir = QDir::homePath();
  46     _configFileName = ".oidentd.conf";
  47
  48     if (Quassel::isOptionSet("oidentd-conffile"))
  49         _configPath = Quassel::optionValue("oidentd-conffile");
  50     else
  51         _configPath = _configDir.absoluteFilePath(_configFileName);
  52
  53     _configTag = " stanza created by Quassel";
  54
  55     _configFile = new QFile(_configPath);
  56
  57     // Rx has to match Template in order for cleanup to work.
  58     // Template should be enhanced with the "from" parameter as soon as Quassel gains
  59     // the ability to bind to an IP on client sockets.
  60
  61     _quasselStanzaTemplate = QString("lport %1 { reply \"%2\" } #%3\n");
  62     _quasselStanzaRx = QRegExp(QString("^lport .* \\{ .* \\} #%1\\r?\\n").arg(_configTag));
  63
  64     // initially remove all Quassel stanzas that might be present
  65     if (parseConfig(false) && writeConfig())
  66         _initialized = true;
  67
  68     return _initialized;
  69 }
  70
  71
  72 QString OidentdConfigGenerator::sysIdentForIdentity(const CoreIdentity *identity) const {
  73     // Make sure the identity's ident complies with strict mode if enabled
  74     const CoreNetwork *network = qobject_cast<CoreNetwork *>(sender());
  75     return network->coreSession()->strictCompliantIdent(identity);
  76 }
  77
  78
  79 bool OidentdConfigGenerator::addSocket(const CoreIdentity *identity,
  80                                        const QHostAddress &localAddress, quint16 localPort,
  81                                        const QHostAddress &peerAddress, quint16 peerPort,
  82                                        qint64 socketId)
  83 {
  84     Q_UNUSED(localAddress)
  85     Q_UNUSED(peerAddress)
  86     Q_UNUSED(peerPort)
  87     Q_UNUSED(socketId)
  88
  89     const QString ident = sysIdentForIdentity(identity);
  90
  91     _quasselConfig.append(_quasselStanzaTemplate.arg(localPort).arg(ident).arg(_configTag).toLatin1());
  92
  93     bool ret = writeConfig();
  94
  95     return ret;
  96 }
  97
  98
  99 //! not yet implemented
 100 bool OidentdConfigGenerator::removeSocket(const CoreIdentity *identity,
 101                                           const QHostAddress &localAddress, quint16 localPort,
 102                                           const QHostAddress &peerAddress, quint16 peerPort,
 103                                           qint64 socketId)
 104 {
 105     Q_UNUSED(identity)
 106     Q_UNUSED(localAddress)
 107     Q_UNUSED(localPort)
 108     Q_UNUSED(peerAddress)
 109     Q_UNUSED(peerPort)
 110     Q_UNUSED(socketId)
 111
 112     return true;
 113 }
 114
 115
 116 bool OidentdConfigGenerator::parseConfig(bool readQuasselStanzas)
 117 {
 118     if (!_configFile->exists())
 119         return true;
 120
 121     if (!_configFile->isOpen() && !_configFile->open(QIODevice::ReadOnly))
 122         return false;
 123     _mutex.lock();
 124
 125     _parsedConfig.clear();
 126     _configFile->seek(0);
 127     while (!_configFile->atEnd()) {
 128         QByteArray line = _configFile->readLine();
 129
 130         if (!lineByUs(line))
 131             _parsedConfig.append(line);
 132         else if (readQuasselStanzas)
 133             _quasselConfig.append(line);
 134     }
 135
 136     _configFile->close();
 137     _mutex.unlock();
 138     return true;
 139 }
 140
 141
 142 bool OidentdConfigGenerator::writeConfig()
 143 {
 144 #ifdef HAVE_UMASK
 145     mode_t prev_umask = umask(S_IXUSR | S_IWGRP | S_IXGRP | S_IWOTH | S_IXOTH); // == 0133, rw-r--r--
 146 #endif
 147     bool not_open = (!_configFile->isOpen() && !_configFile->open(QIODevice::ReadWrite | QIODevice::Text));
 148 #ifdef HAVE_UMASK
 149     umask(prev_umask);
 150 #endif
 151
 152     if (not_open)
 153         return false;
 154
 155     _mutex.lock();
 156
 157     _configFile->seek(0);
 158     _configFile->resize(0);
 159     _configFile->write(_parsedConfig);
 160     _configFile->write(_quasselConfig);
 161
 162     _configFile->close();
 163     _mutex.unlock();
 164     return true;
 165 }
 166
 167
 168 bool OidentdConfigGenerator::lineByUs(const QByteArray &line)
 169 {
 170     return _quasselStanzaRx.exactMatch(line);
 171 }